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Diffstat (limited to 'sound/soc/codecs/wm8940.c')
-rw-r--r--sound/soc/codecs/wm8940.c348
1 files changed, 171 insertions, 177 deletions
diff --git a/sound/soc/codecs/wm8940.c b/sound/soc/codecs/wm8940.c
index 2cb16f895c4..fc6eec9ad66 100644
--- a/sound/soc/codecs/wm8940.c
+++ b/sound/soc/codecs/wm8940.c
@@ -28,14 +28,12 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
-#include <linux/platform_device.h>
-#include <linux/spi/spi.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
@@ -43,88 +41,135 @@
struct wm8940_priv {
unsigned int sysclk;
- u16 reg_cache[WM8940_CACHEREGNUM];
- enum snd_soc_control_type control_type;
- void *control_data;
+ struct regmap *regmap;
};
-static u16 wm8940_reg_defaults[] = {
- 0x8940, /* Soft Reset */
- 0x0000, /* Power 1 */
- 0x0000, /* Power 2 */
- 0x0000, /* Power 3 */
- 0x0010, /* Interface Control */
- 0x0000, /* Companding Control */
- 0x0140, /* Clock Control */
- 0x0000, /* Additional Controls */
- 0x0000, /* GPIO Control */
- 0x0002, /* Auto Increment Control */
- 0x0000, /* DAC Control */
- 0x00FF, /* DAC Volume */
- 0,
- 0,
- 0x0100, /* ADC Control */
- 0x00FF, /* ADC Volume */
- 0x0000, /* Notch Filter 1 Control 1 */
- 0x0000, /* Notch Filter 1 Control 2 */
- 0x0000, /* Notch Filter 2 Control 1 */
- 0x0000, /* Notch Filter 2 Control 2 */
- 0x0000, /* Notch Filter 3 Control 1 */
- 0x0000, /* Notch Filter 3 Control 2 */
- 0x0000, /* Notch Filter 4 Control 1 */
- 0x0000, /* Notch Filter 4 Control 2 */
- 0x0032, /* DAC Limit Control 1 */
- 0x0000, /* DAC Limit Control 2 */
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0x0038, /* ALC Control 1 */
- 0x000B, /* ALC Control 2 */
- 0x0032, /* ALC Control 3 */
- 0x0000, /* Noise Gate */
- 0x0041, /* PLLN */
- 0x000C, /* PLLK1 */
- 0x0093, /* PLLK2 */
- 0x00E9, /* PLLK3 */
- 0,
- 0,
- 0x0030, /* ALC Control 4 */
- 0,
- 0x0002, /* Input Control */
- 0x0050, /* PGA Gain */
- 0,
- 0x0002, /* ADC Boost Control */
- 0,
- 0x0002, /* Output Control */
- 0x0000, /* Speaker Mixer Control */
- 0,
- 0,
- 0,
- 0x0079, /* Speaker Volume */
- 0,
- 0x0000, /* Mono Mixer Control */
+static bool wm8940_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8940_SOFTRESET:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool wm8940_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8940_SOFTRESET:
+ case WM8940_POWER1:
+ case WM8940_POWER2:
+ case WM8940_POWER3:
+ case WM8940_IFACE:
+ case WM8940_COMPANDINGCTL:
+ case WM8940_CLOCK:
+ case WM8940_ADDCNTRL:
+ case WM8940_GPIO:
+ case WM8940_CTLINT:
+ case WM8940_DAC:
+ case WM8940_DACVOL:
+ case WM8940_ADC:
+ case WM8940_ADCVOL:
+ case WM8940_NOTCH1:
+ case WM8940_NOTCH2:
+ case WM8940_NOTCH3:
+ case WM8940_NOTCH4:
+ case WM8940_NOTCH5:
+ case WM8940_NOTCH6:
+ case WM8940_NOTCH7:
+ case WM8940_NOTCH8:
+ case WM8940_DACLIM1:
+ case WM8940_DACLIM2:
+ case WM8940_ALC1:
+ case WM8940_ALC2:
+ case WM8940_ALC3:
+ case WM8940_NOISEGATE:
+ case WM8940_PLLN:
+ case WM8940_PLLK1:
+ case WM8940_PLLK2:
+ case WM8940_PLLK3:
+ case WM8940_ALC4:
+ case WM8940_INPUTCTL:
+ case WM8940_PGAGAIN:
+ case WM8940_ADCBOOST:
+ case WM8940_OUTPUTCTL:
+ case WM8940_SPKMIX:
+ case WM8940_SPKVOL:
+ case WM8940_MONOMIX:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct reg_default wm8940_reg_defaults[] = {
+ { 0x1, 0x0000 }, /* Power 1 */
+ { 0x2, 0x0000 }, /* Power 2 */
+ { 0x3, 0x0000 }, /* Power 3 */
+ { 0x4, 0x0010 }, /* Interface Control */
+ { 0x5, 0x0000 }, /* Companding Control */
+ { 0x6, 0x0140 }, /* Clock Control */
+ { 0x7, 0x0000 }, /* Additional Controls */
+ { 0x8, 0x0000 }, /* GPIO Control */
+ { 0x9, 0x0002 }, /* Auto Increment Control */
+ { 0xa, 0x0000 }, /* DAC Control */
+ { 0xb, 0x00FF }, /* DAC Volume */
+
+ { 0xe, 0x0100 }, /* ADC Control */
+ { 0xf, 0x00FF }, /* ADC Volume */
+ { 0x10, 0x0000 }, /* Notch Filter 1 Control 1 */
+ { 0x11, 0x0000 }, /* Notch Filter 1 Control 2 */
+ { 0x12, 0x0000 }, /* Notch Filter 2 Control 1 */
+ { 0x13, 0x0000 }, /* Notch Filter 2 Control 2 */
+ { 0x14, 0x0000 }, /* Notch Filter 3 Control 1 */
+ { 0x15, 0x0000 }, /* Notch Filter 3 Control 2 */
+ { 0x16, 0x0000 }, /* Notch Filter 4 Control 1 */
+ { 0x17, 0x0000 }, /* Notch Filter 4 Control 2 */
+ { 0x18, 0x0032 }, /* DAC Limit Control 1 */
+ { 0x19, 0x0000 }, /* DAC Limit Control 2 */
+
+ { 0x20, 0x0038 }, /* ALC Control 1 */
+ { 0x21, 0x000B }, /* ALC Control 2 */
+ { 0x22, 0x0032 }, /* ALC Control 3 */
+ { 0x23, 0x0000 }, /* Noise Gate */
+ { 0x24, 0x0041 }, /* PLLN */
+ { 0x25, 0x000C }, /* PLLK1 */
+ { 0x26, 0x0093 }, /* PLLK2 */
+ { 0x27, 0x00E9 }, /* PLLK3 */
+
+ { 0x2a, 0x0030 }, /* ALC Control 4 */
+
+ { 0x2c, 0x0002 }, /* Input Control */
+ { 0x2d, 0x0050 }, /* PGA Gain */
+
+ { 0x2f, 0x0002 }, /* ADC Boost Control */
+
+ { 0x31, 0x0002 }, /* Output Control */
+ { 0x32, 0x0000 }, /* Speaker Mixer Control */
+
+ { 0x36, 0x0079 }, /* Speaker Volume */
+
+ { 0x38, 0x0000 }, /* Mono Mixer Control */
};
static const char *wm8940_companding[] = { "Off", "NC", "u-law", "A-law" };
-static const struct soc_enum wm8940_adc_companding_enum
-= SOC_ENUM_SINGLE(WM8940_COMPANDINGCTL, 1, 4, wm8940_companding);
-static const struct soc_enum wm8940_dac_companding_enum
-= SOC_ENUM_SINGLE(WM8940_COMPANDINGCTL, 3, 4, wm8940_companding);
+static SOC_ENUM_SINGLE_DECL(wm8940_adc_companding_enum,
+ WM8940_COMPANDINGCTL, 1, wm8940_companding);
+static SOC_ENUM_SINGLE_DECL(wm8940_dac_companding_enum,
+ WM8940_COMPANDINGCTL, 3, wm8940_companding);
static const char *wm8940_alc_mode_text[] = {"ALC", "Limiter"};
-static const struct soc_enum wm8940_alc_mode_enum
-= SOC_ENUM_SINGLE(WM8940_ALC3, 8, 2, wm8940_alc_mode_text);
+static SOC_ENUM_SINGLE_DECL(wm8940_alc_mode_enum,
+ WM8940_ALC3, 8, wm8940_alc_mode_text);
static const char *wm8940_mic_bias_level_text[] = {"0.9", "0.65"};
-static const struct soc_enum wm8940_mic_bias_level_enum
-= SOC_ENUM_SINGLE(WM8940_INPUTCTL, 8, 2, wm8940_mic_bias_level_text);
+static SOC_ENUM_SINGLE_DECL(wm8940_mic_bias_level_enum,
+ WM8940_INPUTCTL, 8, wm8940_mic_bias_level_text);
static const char *wm8940_filter_mode_text[] = {"Audio", "Application"};
-static const struct soc_enum wm8940_filter_mode_enum
-= SOC_ENUM_SINGLE(WM8940_ADC, 7, 2, wm8940_filter_mode_text);
+static SOC_ENUM_SINGLE_DECL(wm8940_filter_mode_enum,
+ WM8940_ADC, 7, wm8940_filter_mode_text);
static DECLARE_TLV_DB_SCALE(wm8940_spk_vol_tlv, -5700, 100, 1);
static DECLARE_TLV_DB_SCALE(wm8940_att_tlv, -1000, 1000, 0);
@@ -257,7 +302,7 @@ static const struct snd_soc_dapm_widget wm8940_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AUX"),
};
-static const struct snd_soc_dapm_route audio_map[] = {
+static const struct snd_soc_dapm_route wm8940_dapm_routes[] = {
/* Mono output mixer */
{"Mono Mixer", "PCM Playback Switch", "DAC"},
{"Mono Mixer", "Aux Playback Switch", "Aux Input"},
@@ -289,22 +334,6 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"ADC", NULL, "Boost Mixer"},
};
-static int wm8940_add_widgets(struct snd_soc_codec *codec)
-{
- int ret;
-
- ret = snd_soc_dapm_new_controls(codec, wm8940_dapm_widgets,
- ARRAY_SIZE(wm8940_dapm_widgets));
- if (ret)
- goto error_ret;
- ret = snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
- if (ret)
- goto error_ret;
-
-error_ret:
- return ret;
-}
-
#define wm8940_reset(c) snd_soc_write(c, WM8940_SOFTRESET, 0);
static int wm8940_set_dai_fmt(struct snd_soc_dai *codec_dai,
@@ -365,8 +394,7 @@ static int wm8940_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_codec *codec = dai->codec;
u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFD9F;
u16 addcntrl = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFF1;
u16 companding = snd_soc_read(codec,
@@ -441,6 +469,7 @@ static int wm8940_mute(struct snd_soc_dai *dai, int mute)
static int wm8940_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
+ struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec);
u16 val;
u16 pwr_reg = snd_soc_read(codec, WM8940_POWER1) & 0x1F0;
int ret = 0;
@@ -463,6 +492,14 @@ static int wm8940_set_bias_level(struct snd_soc_codec *codec,
ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1);
break;
case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+ ret = regcache_sync(wm8940->regmap);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to sync cache: %d\n", ret);
+ return ret;
+ }
+ }
+
/* ensure bufioen and biasen */
pwr_reg |= (1 << 2) | (1 << 3);
/* set vmid to 300k for standby */
@@ -473,6 +510,8 @@ static int wm8940_set_bias_level(struct snd_soc_codec *codec,
break;
}
+ codec->dapm.bias_level = level;
+
return ret;
}
@@ -604,7 +643,7 @@ static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
switch (div_id) {
case WM8940_BCLKDIV:
- reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFFEF3;
+ reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFFE3;
ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 2));
break;
case WM8940_MCLKDIV:
@@ -612,8 +651,8 @@ static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 5));
break;
case WM8940_OPCLKDIV:
- reg = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFCF;
- ret = snd_soc_write(codec, WM8940_ADDCNTRL, reg | (div << 4));
+ reg = snd_soc_read(codec, WM8940_GPIO) & 0xFFCF;
+ ret = snd_soc_write(codec, WM8940_GPIO, reg | (div << 4));
break;
}
return ret;
@@ -627,7 +666,7 @@ static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
-static struct snd_soc_dai_ops wm8940_dai_ops = {
+static const struct snd_soc_dai_ops wm8940_dai_ops = {
.hw_params = wm8940_i2s_hw_params,
.set_sysclk = wm8940_set_dai_sysclk,
.digital_mute = wm8940_mute,
@@ -656,55 +695,23 @@ static struct snd_soc_dai_driver wm8940_dai = {
.symmetric_rates = 1,
};
-static int wm8940_suspend(struct snd_soc_codec *codec, pm_message_t state)
+static int wm8940_suspend(struct snd_soc_codec *codec)
{
return wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF);
}
static int wm8940_resume(struct snd_soc_codec *codec)
{
- int i;
- int ret;
- u8 data[3];
- u16 *cache = codec->reg_cache;
-
- /* Sync reg_cache with the hardware
- * Could use auto incremented writes to speed this up
- */
- for (i = 0; i < ARRAY_SIZE(wm8940_reg_defaults); i++) {
- data[0] = i;
- data[1] = (cache[i] & 0xFF00) >> 8;
- data[2] = cache[i] & 0x00FF;
- ret = codec->hw_write(codec->control_data, data, 3);
- if (ret < 0)
- goto error_ret;
- else if (ret != 3) {
- ret = -EIO;
- goto error_ret;
- }
- }
- ret = wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
- if (ret)
- goto error_ret;
-
-error_ret:
- return ret;
+ wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ return 0;
}
static int wm8940_probe(struct snd_soc_codec *codec)
{
- struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec);
struct wm8940_setup_data *pdata = codec->dev->platform_data;
int ret;
u16 reg;
- codec->control_data = wm8940->control_data;
- ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8940->control_type);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
- return ret;
- }
-
ret = wm8940_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
@@ -726,16 +733,7 @@ static int wm8940_probe(struct snd_soc_codec *codec)
return ret;
}
- ret = snd_soc_add_controls(codec, wm8940_snd_controls,
- ARRAY_SIZE(wm8940_snd_controls));
- if (ret)
- return ret;
- ret = wm8940_add_widgets(codec);
- if (ret)
- return ret;
-
return ret;
-;
}
static int wm8940_remove(struct snd_soc_codec *codec)
@@ -750,36 +748,53 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8940 = {
.suspend = wm8940_suspend,
.resume = wm8940_resume,
.set_bias_level = wm8940_set_bias_level,
- .reg_cache_size = ARRAY_SIZE(wm8940_reg_defaults),
- .reg_word_size = sizeof(u16),
- .reg_cache_default = wm8940_reg_defaults,
+ .controls = wm8940_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8940_snd_controls),
+ .dapm_widgets = wm8940_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8940_dapm_widgets),
+ .dapm_routes = wm8940_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(wm8940_dapm_routes),
};
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-static __devinit int wm8940_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static const struct regmap_config wm8940_regmap = {
+ .reg_bits = 8,
+ .val_bits = 16,
+
+ .max_register = WM8940_MONOMIX,
+ .reg_defaults = wm8940_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8940_reg_defaults),
+
+ .readable_reg = wm8940_readable_register,
+ .volatile_reg = wm8940_volatile_register,
+};
+
+static int wm8940_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
struct wm8940_priv *wm8940;
int ret;
- wm8940 = kzalloc(sizeof(struct wm8940_priv), GFP_KERNEL);
+ wm8940 = devm_kzalloc(&i2c->dev, sizeof(struct wm8940_priv),
+ GFP_KERNEL);
if (wm8940 == NULL)
return -ENOMEM;
+ wm8940->regmap = devm_regmap_init_i2c(i2c, &wm8940_regmap);
+ if (IS_ERR(wm8940->regmap))
+ return PTR_ERR(wm8940->regmap);
+
i2c_set_clientdata(i2c, wm8940);
- wm8940->control_data = i2c;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8940, &wm8940_dai, 1);
- if (ret < 0)
- kfree(wm8940);
+
return ret;
}
-static __devexit int wm8940_i2c_remove(struct i2c_client *client)
+static int wm8940_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
- kfree(i2c_get_clientdata(client));
+
return 0;
}
@@ -791,36 +806,15 @@ MODULE_DEVICE_TABLE(i2c, wm8940_i2c_id);
static struct i2c_driver wm8940_i2c_driver = {
.driver = {
- .name = "wm8940-codec",
+ .name = "wm8940",
.owner = THIS_MODULE,
},
.probe = wm8940_i2c_probe,
- .remove = __devexit_p(wm8940_i2c_remove),
+ .remove = wm8940_i2c_remove,
.id_table = wm8940_i2c_id,
};
-#endif
-static int __init wm8940_modinit(void)
-{
- int ret = 0;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- ret = i2c_add_driver(&wm8940_i2c_driver);
- if (ret != 0) {
- printk(KERN_ERR "Failed to register wm8940 I2C driver: %d\n",
- ret);
- }
-#endif
- return ret;
-}
-module_init(wm8940_modinit);
-
-static void __exit wm8940_exit(void)
-{
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- i2c_del_driver(&wm8940_i2c_driver);
-#endif
-}
-module_exit(wm8940_exit);
+module_i2c_driver(wm8940_i2c_driver);
MODULE_DESCRIPTION("ASoC WM8940 driver");
MODULE_AUTHOR("Jonathan Cameron");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 20:24:39 +0000